Question

prove that 1+cot²A=cosec²A​

Answer 1

Answer:

see explanation

Step-by-step explanation:

Consider the left side

1 + cot²A

= 1 + $\frac{cos^2A}{sin^2A}$

= $\frac{sin^2A+cos^2A}{sin^2A}$

= $\frac{1}{sin^2A}$

= cosec²A

= right side, thus proven